{"product_id":"tk-01-05-4485","title":"S-Stage Big Bore Kit 138cc with Camshaft XTZ125\/YX125DX\/YB125SP","description":"Details:\u003cbr\u003e\n・This S-Stage bore up kit allows for powerful output characteristics simply by bolting it onto the normal cylinder head.\u003cbr\u003e\n・When installed with a sports camshaft, it maximizes the engine output of the S-Stage, achieving torqueful riding completely different from a normal engine.\u003cbr\u003e\n・By using the normal cylinder head and installing the cylinder and piston, the displacement can be increased to 138cc.\u003cbr\u003e\n・Bore diameter: 57mm \/ Stroke: 54mm (normal)\u003cbr\u003e\n・Features an aluminum cylinder with an iron sleeve.\u003cbr\u003e\n・The piston skirt is molybdenum coated to improve initial break-in with the cylinder. Compression ratio 11:6:1 Recommended parts for simultaneous installation\u003cbr\u003e\n・The following mufflers are for the XTZ125. They cannot be installed on the YX125DX\/YB125SP. Also, while the following XTZ125 mufflers are government-certified, this applies to normal engines.\u003cbr\u003e\n・If installed simultaneously with Takegawa engine parts, it will not be certified. Please be aware.\u003cbr\u003e\n・Muffler: Improves exhaust efficiency and increases output. It also has excellent compatibility with Takegawa S-Stage bore up kits.\u003cbr\u003e\nCone Oval Muffler (Slip-on \/ Part No. 04-02-0241)\u003cbr\u003e\nPower Silent Oval Muffler (Slip-on \/ Part No. 04-02-0242) Compatible models: YAMAHA XTZ125\/JYM125-9, YX125DX\/JYM125-3G, YB125SP\/JYM125-3F\u003cbr\u003e\n*Images are for illustration purposes only. The design and specifications of the products shown are subject to change without notice. Please understand.","brand":"スペシャルパーツ武川(SPECIAL PARTS TAKEGAWA)","offers":[{"title":"Default Title","offer_id":45582568980715,"sku":"tk-01-05-4485","price":39237.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1021\/9499\/files\/tk-01-05-4485.jpg?v=1719907250","url":"https:\/\/bikeman.jp\/en\/products\/tk-01-05-4485","provider":"バイクマン","version":"1.0","type":"link"}